<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <div id="app">
            <select name="abc" id="" v-model="fruits">
                <option value="苹果">苹果</option>
                <option value="菠萝">菠萝</option>
                <option value="凤梨">凤梨</option>
            </select>
            <div>宁喜欢的水果是 {{fruits}}</div>
        </div>
        <script src="../js/vue.js"></script>
        <script>
            const app = new Vue({
                el: '#app',
                data: {
                    fruits: '菠萝'
                }
            })
        </script>
    </body>
</html>